These great hollow globes of artificial super-metals, and artificial transparent adamant, ranged in size from the earliest and smallest structures, which were no bigger than a very small asteroid, to spheres considerably larger than the Earth. (Olaf Stapledon, STAR MAKER)
Friday, January 26, 2018
Dang Tourists
Today's Astronomy Picture of the Day brings us another tourist selfie from the surface of Mars. MSL Curiosity is climbing Vera Rubin Ridge!
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